Are all countries in scope for the Avation group, or is it US-centric?
I certainly hope this group will have a world-wide scope, and will find a way to be clear in questions which jurisdiction is intended.
As an English-language forum on a US-hosted site, I imagine many of the participants will be US residents and will assume FAA jurisdiction when giving replies. But I live in Canada, and I'd like to be able to ask questions about Canadian regulations and Canadian aviation circumstances and Canadian best practices.
Some parts of aviation, such as aerodynamics and weather conditions, will be the same regardless of jurisdiction. But some, such as regulations and best practices, will differ.
For example, a US-licensed pilot in the US must have three night take-offs and landings, to a full stop, within the last three months to be allowed to carry passengers at night. But a Canadian-licensed pilot in Canada must have five night take-offs and landings within the last six months, and they need not be to a full stop. This reflects the reality that, since it lies in northern latitudes, Canada has very long days during the summer, so there's not many hours of night to be had.
I don't know what the best way is to specify the jurisdiction to which questions apply. One approach is a system of tags for countries. Another is to be sure the question text specifies the jurisdiction. There probably will be some questioners who label by country (Canada, United States) and some by regulating agency (Transport Canada/FAA) and some by regulations name (CARs, FARs). If other Stack Exchange sites have multi-national scope, maybe we can learn from them what works.